Metro ESM3

Question 1

By utilizing the key controls, the escalators can be placed in the mode necessary to assist in evacuation. Where are the ‘key controls’ located at the Metro stations?

Answer 1

They are located to the left of the escalator as you face it, on the landing closest to the kiosk.

Question 2

What practice of stopping an escalator is no longer encouraged?

Answer 2

Striking the sidewall panel at a point where the steps flattened out, prior to passing the comb plate at the top or bottom of the escalator.

Question 3

A pressure switch is located at certain points to stop the escalator should it detect something caught between the sidewall panel and the step. How many pounds of pressure are needed to activate the system?

Answer 3

150 lbs

Question 4

Single access stations, those with only one set of escalators to access the station, have an automatic fire suppression system, what type is it?

Answer 4

Deluge sprinkler system

Question 5

Entry escalator will be shut down automatically when fire alarms are activated when?

Answer 5

With a 2-minute delay

Question 6

In Metro Ops, what does to term ‘right of way’ describe?

Answer 6

The areas between the fences and tunnel walls, where the track bed is located.

Question 7

What are the ‘running rails’ constructed of and it’s use?

Answer 7

They are constructed of a continuous welded steel rail that acts as a negative return for electric traction power.

Question 8

What is used to ‘block’ switches’?

Answer 8

Cribbing

Question 9

How far apart are signs located in the tunnels to show direction and distance to the next station or emergency exits?

Answer 9

800 feet

Question 10

How far apart are ‘Danger High Voltage’ signs?

Answer 10

250 feet

Question 11

Where are ‘no clearance’ signs located?

Answer 11

Every 50 ft in areas of no clearance

Question 12

Tunnel ‘Safety walkways’ is what width, and located where?

Answer 12

They are 22 inches wide and located opposite the ‘third rail’.

Question 13

What is the maximum travel distance to emergency exits?

Answer 13

1250 ft

Question 14

What are the three (3) types of Metro tunnels?

Answer 14

Circular, Horseshoe, and Box (Cut and Cover)

Question 15

A 13’-9” wide for single-track configuration, that have double track widths with poured concreted walls between the tracks and crossover access every 25 feet, the double width tunnels are 29’-0” wide. This would describe which type of tunnel?

Answer 15

Box (Cut and Cover)

Question 16

For the At-Grade Right of Way: (surface level tracks), the Emergency Access gates are located every 800 ft and padlocked, which Metro keys should be used?

Answer 16

2595 or A289

Question 17

To protect passengers in the train if possible, move them to safety walkways by using door #9 of the rail car only when?

Answer 17

It is not over the third rail

Question 18

How much power does the Traction Power Substation (TPSS) supply the service yards?

Answer 18

750 Volts DC

Question 19

What is the purpose of the ‘Tie breaker station’?

Answer 19

To provide uninterruptible third rail power supply for the yard.

Question 20

For Rail cars, what is the maximum weight and spacing on the roofs?

Answer 20

250 lbs, spaced 30” apart

Question 21

Four (4) current collector shoes are on each rail car, two per truck. When any one collector shoe is in contact with a live 3rd rail, what happens to the others?

Answer 21

All collector shoes on that car are also live.

Question 22

Each rail car is equipped with a dynamic braking system. Dynamic braking is basically the reversing of the polarity of the voltage applied to the traction motor field windings. What speed must a rail car be moving in order to activate the dynamic braking system?

Answer 22

15 miles per hour

Question 23

The batteries on all rail cars are connected in parallel. The battery system will supply power for up?

Answer 23

Two hours

Question 24

What will the battery system supply power on the rail car?

Answer 24

Run the emergency lighting, communications equipment, running lights, and electric doors.

Question 25

The center motor control box contains the controller necessary to dump stored third rail power from the capacitors, which device is this?

Answer 25

The Filter Capacitor Discharge switch (FCDS)

Question 26

Metro rail system has three distinct types of electrical systems what are they?

Answer 26

Traction Power System, AC Power System, and Battery Power System

Question 27

Which system provides power to running lights, ventilation, and any other service not directly involved in propelling rail cars?

Answer 27

AC Power System

Question 28

A gray protective fiberglass cover is located over the third rail, how much pounds of force can it withstand?

Answer 28

250lbs per inch

Question 29

The maximum length of a section of third rail?

Answer 29

800 ft

Question 30

When contact is made over the ETS phone, for the purpose of shutting down electrical power, OCC will comply by utilizing a computer control to take power down in the area requested, what type of outage is this?

Answer 30

Supervisory Power Outage